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Class 10 Biology Lakhmir Singh And Manjit Kaur Solutions CHAPTER 6 MANAGEMENT OF NATURAL RESOURCES

Lakhmir Singh Biology Class 10 Solutions Page No:258 Question 1: Name two fossil fuels. Solution : Coal and Petroleum. Question 2: Name the major programme started to replenish forests. Solution : Silviculture Question 3: Apart from the availability of forest products, name two other things which are affected by the destruction of forests. Solution : Quality of soil and sources of water. Question 4: Name

Class 10 Biology Lakhmir Singh And Manjit Kaur Solutions CHAPTER 5 OUR ENVIRONMENT

Lakhmir Singh Biology Class 10 Solutions Page No:226 Question 1: What is the functional unit of the environment comprising of the living and non-living components called ? Solution : Ecosystem. Question 2: Name two natural ecosystems and two artificial ecosystems. Solution : Natural ecosystems – Grass land and forest. Artificial ecosystems – Parks and Gardens. Question 3: Which one of the

Class 10 Biology Lakhmir Singh And Manjit Kaur Solutions CHAPTER 4 HEREDITY AND EVOLUTION

Lakhmir Singh Biology Class 10 Solutions Page No:191 Question 1: Which of the processes, sexual reproduction or asexual reproduction, brings about maximum variations in the offsprings ? Solution : Sexual Reproduction Question 2: Name one variation in humans connected with ears. Solution : Free Earlobes. Question 3: What constitutes the link between one generation and the next ? Solution : Gametes. Question 4: If the

Class 10 Biology Lakhmir Singh And Manjit Kaur Solutions CHAPTER 3 HOW DO ORGANISMS REPRODUCE?

Lakhmir Singh Biology Class 10 Solutions Page No:141 Question 1: Which life process ensures that a plant or animal species will not disappear from this earth ? Solution : Reproduction. Question 2: What is the name of the reproductive process : (a) which involves two parents ? (b) which involves only one parent ? Solution : (a) Sexual reproduction. (b) Asexual reproduction. Question

Class 10 Chemistry Lakhmir Singh And Manjit Kaur Solutions CHAPTER 3 METALS AND NON-METALS

Lakhmir Singh Chemistry Class 10 Solutions Page No:131 Question 1: Name one metal and one non-metal which exist in liquid state at room temperature. Solution : Metal – Mercury. Non metal – Bromine. Question 2: Why are metals called electropositive elements whereas non-metals are called electronegative elements ? Solution : Metals are electropositive elements because they can form positive

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